Hello, On Wed, Jul 06, 2016 at 10:58:55PM +0800, aaronlee0817 wrote: > >But that said, can't we just copy BIO_THROTLED while splitting? > > In my opinion， copying BIO_THROTLED while splitting doesn't work > with this, because, the bio within the limit will not set BIO_THROTLED > but will be split, and back to call generic_make_request(), and will be > count twice. I see. It's just a bit weird that we're marking this from clone site when it's an issue which is specific to throttling. The thing is depending on how bio clone is used, it could misbehave in the other direction (bio not accounted at all). What we want to know is whether a bio has been previously accounted or not, rather than whether a bio is a result of splitting. I think it'd be better to track that instead. Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-block" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
